Fuel mixing device



Oct. 8, 1940.

E. L. LEWIS FUEL MIXING DEVICE Filed Jan. 9, 1959 Inventor Attorneys Patented Oct. 8, 1940 UNITED STATES 2,216,846 FUEL MIXING DEVICE Evan L. Lewis, Huntington, W. Va.

2 Claims.

The present invention relates to mixing devices burning, heating and cooking plants, and has for its primary object to provide a tubular member adapted for mounting in the fuel feed pipe leading from the carburetor to the intake manifold of the engine whereby to increase the turbulence of air and gas passing to the intake manifold to promote the intimate mixing thereof.

A further object is to provide a device of this character of simple and practical construction, which is efficient and reliable in performance, relatively inexpensive to manufacture and install in operative position and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming part hereof, wherein like numerals refer to like parts throughout, and in which view through the fuel feed pipe showing the mixing device in position therein.

Figures 2 and 3 are transverse sectional 'views taken respectively on the line 2-2 and 3--3 of Figure 1, and

Figure 4 is a fragmentary side elevational view illustrating the manner in which the arcuate mixing fins are struck from the side walls of the device.

Referring now to the drawing in detail, the numeral 5 designates a fuel feed pipe of a type which leads from'the carburetor of an internal combustion engine to the intake manifold thereof, or from orifice to point of combustion in a gas burner, said pipe being usually formed of sections having endwise abutting engagement and connected to each other by a pipe union 6 of conventional construction.

Positioned in the pipe is a tubular member 1 having one end formed with an outstanding annular flange 8 clamped between the abutting ends ofthe pipe sections, as more clearly shown in Figure 1 of the drawing, the tubular member I snugly fitting within the pipe 5. Adjacent the connected ends of the tubular member are triangular-shaped fins 9 struck therefrom, the fins being bent radially inwardly from their connected edge portions indicated at l0, and the fins are arranged in pairs to facilitate the cutting operaion, each pair of triangular-shaped fins being ormed from a single rectangle, as shown in Fige 4 of the drawing and having their free end ortions oppositely bent in an inwardly direcion and curved in opposite arcs as more clearly llustrated in Figure 2, whereby the ends of,, the

terminate adjacent the center of the tubular for internal combustion engines, and for gas Figure 1 is a fragmentary longitudinal sectional Application Januaryfl, 1939, Serial No. 250,035

member and cooperate to break up the fuel as the same enters the tubular member 1 during its passage through the pipe 5.

The free end portion of the tubular member 1 is provided with a plurality of longitudinally extending fingers II, the free end portion l3 of each of the fingers being curved eccentric with respect to the axis of the pipe 5, as more clearly illustrated in Figure 3 of the drawing, and one longitudinal edge portion of the fingers is spirally twisted as shown at H and projects inwardly from the walls of the pipe to produce a swirling motion of the gas and air passing therethrough whereby to cause the thorough mixing thereof.

It is believed the details of construction and advantages of the device will be readily understood from the foregoing without further detailed explanation.

Having thus described the invention, what I claim is:

1. A gas and air mixing device of the class described comprising a tubular member, means for anchoring the member in a fuel feed pipe, fins struck from the Walls of the member adjacent one end, said fins being arranged in pairs and each pair struck from a single opening in the member, each fin being coextensive and having a connected edge extending longitudinally of the member and having inturned free ends projecting radially into the member and a plurality of longitudinally extending fingers at the other end of the member, one longitudinal edge portionlof said fingers being twisted inwardly.

2. A gas and air mixing device of the class described comprising a tubular member, means for anchoring the member in a fuel feed pipe, fins struck from the walls of the member adjacent one end, said fins being of triangular form and arranged in pairs with each pair struck from a single opening in the member, each fin being coextensive and having a connected edge extending longitudinally of the member, said fins of each pair further being oppositely ,curved with their free ends converging and terminating adjacent the center of the member and arranged edgewise with respect to the direction of travel of the gas and air passing through the member, the converging ends of the fins cooperating to increase restriction at the center of the tubular member to deflect the broken globules toward the walls of the member and a plurality of longitudinally extending fingers rearwardly of the fins, said fingers being formed as a continuation of the walls of the tubular member and having one longitudinal edge twisted inwardly and in the path of the gas and air passing along the walls of the member to produce a swirling-movement thereof.

EVAN L. LEWIS. 

